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Density Calculator

Solve ρ = m ÷ V for density, mass or volume — enter the two values you have.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

Solve for

Result

5kg/m³

Density 5 kg/m³
Show steps
  1. ρ = m ÷ V = 10 kg ÷ 2 m³ = 5 kg/m³.

How to use the density calculator

  1. 1Choose to solve for density, mass or volume.
  2. 2Enter the two known values in kg and m³.
  3. 3Read the answer, with the rearranged formula under Show steps.

Will it float?

Compare against water at 1000 kg/m³: anything less dense floats, anything denser sinks. It’s a quick gut-check that your mass and volume inputs are in the right ballpark.

Frequently asked questions

What is the density formula?

Density is mass divided by volume: ρ = m ÷ V. Rearranged, mass m = ρ × V and volume V = m ÷ ρ.

What units does this use?

Kilograms for mass and cubic metres for volume, giving density in kg/m³. Water is about 1000 kg/m³, so a value near that is a useful sanity check.

How do I convert g/cm³ to kg/m³?

Multiply by 1000: 1 g/cm³ equals 1000 kg/m³. That is why water is 1 g/cm³ and also 1000 kg/m³.